(The XR manages with one lens.) That, in turn, determines how blurry the background will be. In the iPhone XS/Max, Portrait mode, the two lenses are used together to create a depth map so that the image processor can later construct a dynamic f-ratio. It comes from the Japansese word boke or “blur.” How It’s Done The shutter speed is then made less to compensate for the brighter image. The f-ratio is reduced to throw the background into a blur when taking a portrait. When the depth of field is poor, objects in the background are out of focus. This blur is often an intentional effect by the photographer. A faster f-ratio, say, f/1.4 has a focal length of only 1.4 times the aperture.
So it’s a dimensionless number.) f/10 means the focal length is ten times the aperture and the depth of field is good. (The focal ratio, abbreviated f-ratio, is the ratio of the focal length to the effective aperture. The faster a lens is, that is the lower the focal ratio numerically, the less depth of field it can produce. The company has previously acknowledged similarly serious flaws and, in what Strafach estimated to be perhaps a dozen occasions, has noted that it was aware of reports that such security holes had been exploited.Portrait mode. Security researcher Will Strafach said he had seen no technical analysis of the vulnerabilities that Apple has just patched.
Its spyware is known to have been used in Europe, the Middle East, Africa and Latin America against journalists, dissidents and human rights activists. NSO Group has been blacklisted by the U.S. In July 2021, Apple released a similar security point that said that a flaw in its security design was being "actively exploited." Again, an anonymous researcher was credited for the discovery. In all cases, it cited an anonymous researcher.ĭuration 2:04 Tech giants Apple, Google and Microsoft have announced they're working on implementing passwordless sign-on technology, allowing users to more securely log into mobile, desktop and browser apps using their smartphones without a standard password.Ĭommercial spyware companies such as Israel's NSO Group are known for identifying and taking advantage of such flaws, exploiting them in malware that surreptitiously infects targets' smartphones, siphons their contents and surveils the targets in real time.
The flaw also affects some iPod models.Īpple did not say in the reports how, where or by whom the vulnerabilities were discovered.
Security experts have advised users to update affected devices - the iPhone6S and later models several models of the iPad, including the 5th generation and later, all iPad Pro models and the iPad Air 2 and Mac computers running MacOS Monterey.
That would allow intruders to impersonate the device's owner and subsequently run any software in their name, said Rachel Tobac, CEO of SocialProof Security.Īccording to the security reports, the vulnerabilities impacted Apple's WebKit, which is the engine that powers the Safari web browser and other browsers on iOS and the kernel, Apple's core computer operating system. Apple has disclosed serious security vulnerabilities for iPhones, iPads and Macs that could potentially allow attackers to take complete control of these devices.Īpple released two security reports about the issue on Wednesday, although they didn't receive wide attention outside of tech publications.Īpple's explanation of the vulnerability means a hacker could get "full admin access" to the device.